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K82 returning incorrect ID in boundary scan

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K82 returning incorrect ID in boundary scan

星期三
139 次查看
olly12
Contributor I

I have a board with two MK82FN256VDC15 processors that we will be using boundary scan to test.

It's all working fine, interconnect and various other tests are all good.  However the initial infrastructure test fails as it returns the wrong ID.

There does not appear to be BSDL available for K82, however the K80 BSDL files say that the internal structure is identical to the K80 and so the K80 BSDL can be used.
I am using the file K80-121BGA.BSDL.  The ID code within is:
00001000001111011001000000011101
However - I am getting a slightly different result....
00011011001111011001000000011101

There seem to be 3 bonus 1's, one in the version block and two in the part number block.

Whilst I could fix this by editing the BSDL to hide the failure, I need to understand why I'm getting a different value to expected.  It is important that we know components are genuine, so I would need a very good explanation as to why the BSDL needed modification - I may just be masking a counterfeit component issue.
Our components are purchased through a CEM who is required to buy through approved channels.

Any insights appreciated.

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13 小时之前
7 次查看
Celeste_Liu
NXP Employee
NXP Employee

Hello @olly12 ,

Thank you for reporting this issue and bringing it to our attention.

Based on the JTAG ID Register definition in the datasheet, where PRN = 0001, it appears that the IDCODE value in the BSDL file may be incorrect.

Celeste_Liu_0-1791542574876.png

 

Celeste_Liu_1-1791542600007.png

 

I will report this issue to our internal team for further verification and correction. To proceed with our escalation process, could you please provide some details about your end application?

Thanks again!

BR

Celeste

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